{"instruction": "You are an expert in named entity recognition. Please extract entities that match the schema definition from the input. Return an empty list if the entity type does not exist. Please respond in the format of a JSON string.", "schema": ["food", "time", "vehicle", "animal", "geographical phenomenon"], "input": "He continued his studies under John Milnor at the Massachusetts Institute of Technology , earning his PhD in mathematics in 1970 ."}
{"food": [], "time": [], "vehicle": [], "animal": [], "geographical phenomenon": []}